World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
83
Citations
24654
World Ranking
838
National Ranking
365

Robert G. M. Spencer publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Robert G. M. Spencer sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 319 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Robert G. M. Spencer D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Robert G. M. Spencer sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 83 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Robert G. M. Spencer is affiliated with Florida State University in the United States. Their work spans multiple disciplines within Earth and Planetary Sciences and Environmental Science, with a significant focus on subfields such as Atmospheric Science, Oceanography, Ecology, Environmental Chemistry, and Global and Planetary Change.

The primary topics covered in their research include:

  • Marine and coastal ecosystems
  • Climate change and permafrost
  • Cryospheric studies and observations
  • Geology and Paleoclimatology Research
  • Microbial Community Ecology and Physiology
  • Isotope Analysis in Ecology
  • Atmospheric and Environmental Gas Dynamics

Their recent publications include:

  • A new conceptual framework for the transformation of groundwater dissolved organic matter, 2022, Nature Communications
  • How humans alter dissolved organic matter composition in freshwater: relevance for the Earth's biogeochemistry, 2021, Biogeochemistry
  • Groundwater as a major source of dissolved organic matter to Arctic coastal waters, 2020, Nature Communications
  • Enhanced trace element mobilization by Earth's ice sheets, 2020, Proceedings of the National Academy of Sciences
  • Detecting vulnerability of humid tropical forests to multiple stressors, 2021, One Earth

Frequent co-authors who have collaborated extensively with Spencer include:

  • Anne M. Kellerman
  • Amy M. McKenna
  • David C. Podgorski
  • Jon Hawkings
  • Amy D. Holt

Spencer's research has been published frequently in the following journals:

  • Global Biogeochemical Cycles
  • Journal of Geophysical Research Biogeosciences
  • Water Research
  • Biogeochemistry
  • Environmental Science & Technology

In addition to journal articles, Spencer has also contributed to book publications, including one published by Springer International Publishing titled Dictators, Dictatorship and the African Novel in 2021.

Best Publications

  • Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review

    Jason B. Fellman;Eran Hood;Robert G. M. Spencer

  • Measurement of Dissolved Organic Matter Fluorescence in Aquatic Environments: An Interlaboratory Comparison

    Kathleen R. Murphy;Kenna D. Butler;Robert G. M. Spencer;Colin A. Stedmon

  • Illuminated darkness: molecular signatures of Congo River dissolved organic matter and its photochemical alteration as revealed by ultrahigh precision mass spectrometry.

    Aron Stubbins;Robert G. M. Spencer;Hongmei Chen;Patrick G. Hatcher

  • Terrestrial carbon inputs to inland waters: A current synthesis of estimates and uncertainty

    Travis W. Drake;Peter A. Raymond;Robert G. M. Spencer

  • Glaciers as a source of ancient and labile organic matter to the marine environment

    Eran Hood;Jason Fellman;Jason Fellman;Robert G. M. Spencer;Robert G. M. Spencer;Peter J. Hernes

  • Global charcoal mobilization from soils via dissolution and riverine transport to the oceans

    Rudolf Jaffé;Yan Ding;Jutta Niggemann;Anssi V. Vähätalo;Anssi V. Vähätalo

  • Dissolved organic carbon and chromophoric dissolved organic matter properties of rivers in the USA

    Robert G. M. Spencer;Kenna D. Butler;George R. Aiken

  • Detecting the signature of permafrost thaw in Arctic rivers

    Robert G. M. Spencer;Paul J. Mann;Thorsten Dittmar;Timothy I. Eglinton

  • Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin

    Paul Mann;Anna Davydova;Nikita Zimov;Robert Spencer

  • Storage and release of organic carbon from glaciers and ice sheets

    Eran Hood;Tom J. Battin;Jason Fellman;Shad O'Neel

  • Photochemical degradation of dissolved organic matter and dissolved lignin phenols from the Congo River

    Robert G. M. Spencer;Aron Stubbins;Peter J. Hernes;Andy Baker

  • Seasonal and spatial variability in dissolved organic matter quantity and composition from the Yukon River basin, Alaska

    Robert G. M. Spencer;George R. Aiken;Kimberly P. Wickland;Robert G. Striegl

  • High biolability of ancient permafrost carbon upon thaw

    Jorien E. Vonk;Jorien E. Vonk;Jorien E. Vonk;Paul J. Mann;Sergey Davydov;Anna Davydova

  • Aquatic organic matter fluorescence

    Paula G. Coble;Jamie Lead;Andy Baker;Darren M. Reynolds

  • Characterization of dissolved organic matter from source to sea using fluorescence and absorbance spectroscopy.

    Andy Baker;Robert G.M. Spencer

  • Unifying Concepts Linking Dissolved Organic Matter Composition to Persistence in Aquatic Ecosystems.

    Anne M. Kellerman;François Guillemette;David C. Podgorski;George R. Aiken

  • Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska

    Robert G. M. Spencer;Robert G. M. Spencer;George R. Aiken;Kenna D. Butler;Mark M. Dornblaser

  • Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment

    Benjamin W. Abbott;Jeremy B. Jones;Edward A. G. Schuur;F. Stuart Chapin

  • Ancient low–molecular-weight organic acids in permafrost fuel rapid carbon dioxide production upon thaw

    Travis W. Drake;Travis W. Drake;Kimberly P. Wickland;Robert G. M. Spencer;Diane M. McKnight

  • A new conceptual framework for the transformation of groundwater dissolved organic matter

    Unknown

  • Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks

    Paul J. Mann;Timothy I. Eglinton;Cameron P. McIntyre;Nikita Zimov

  • Freeze/thaw and pH effects on freshwater dissolved organic matter fluorescence and absorbance properties from a number of UK locations

    Robert G.M. Spencer;Lucy Bolton;Andy Baker

Frequent Co-Authors

David C. Podgorski
David C. Podgorski University of New Orleans
Peter J. Hernes
Peter J. Hernes University of California, Davis
Aron Stubbins
Aron Stubbins Northeastern University
Robert M. Holmes
Robert M. Holmes Woods Hole Research Center
Andy Baker
Andy Baker University of New South Wales
George R. Aiken
George R. Aiken United States Geological Survey
Jorien E. Vonk
Jorien E. Vonk Vrije Universiteit Amsterdam
Robert G. Striegl
Robert G. Striegl United States Geological Survey
James W. McClelland
James W. McClelland The University of Texas at Austin

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